From the Simpson website, they stated PHD-5 HD anchor bolt nut should be finger-tight plus 1/2 turn. Do you follow their recommendation? What is the reason behind such a loose torque? Thank you.
From Simpson website: "For holdowns, per ASTM test standards, anchor bolt nut should be finger-tight plus
1⁄₃ to 1⁄₂ turn with a hand wrench, with consideration given to possible future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used."
ackma wrote: From the Simpson website, they stated PHD-5 HD anchor bolt nut should be finger-tight plus 1/2 turn. Do you follow their recommendation? What is the reason behind such a loose torque? Thank you.
I left out that I am going to use dry lumber, so shrinkage should be minimal. Should I still finger-tight + 1/2 turn? If not, what is your recommended torque for the 5/8" anchor nut?
We just tighten them the same way we would tighten a spark plug and use a ratchet and very deep socket. Loose nuts on hold downs cause slip and should be avoided. I have no idea why they recommend this except I guess they thought they needed to say something.
